Disparities of demographics, clinical characteristics, and hospital outcomes of AMI pilgrims vs non-pilgrims-tertiary center experience.

BACKGROUND

Acute myocardial infarction (AMI) is usually caused by rupture of an atherosclerotic plaque leading to thrombotic occlusion of a coronary artery. Cardiovascular disease has recently emerged as the leading cause of death during hajj. Our aim is to demonstrate the AMI pilgrim's related disparities and comparing them to non-pilgrim patients.

RESULT: Out of 3044 of patients presented with AMI from January 2016 to August 2019, 1008 (33%) were pilgrims. They were older in age (P < 0.001) and showed significantly lower rates cardiovascular risk factors (P < 0.001 for DM, smoking, and obesity). Pilgrims were also less likely to receive thrombolytic therapy (P < 0.001), show lower rate of late AMI presentation (P < 0.001), develop more LV dysfunction post AMI (P < 0.001), and have critical CAD anatomy in their coronary angiography (P < 0.001 for MVD and = 0.02 for LM disease) compared to non-pilgrim AMI patients. Despite AMI pilgrims recorded higher rate of primary percutaneous coronary intervention (PPCI) procedures, they still showed poor hospital outcomes (P < 0.001, 0.004, < 0.001, 0.05, and 0.001, respectively for pulmonary edema, cardiogenic shock, mechanical ventilation, cardiac arrest, and in-hospital mortality, respectively). Being a pilgrim and presence of significant left ventricular systolic dysfunction, post AMI was the two independent predictors of mortality among our studied patients (P = 0.005 and 0.001, respectively).

CONCLUSION

Although AMI pilgrims had less cardiovascular risk factors and they were early revascularized, they showed higher rates of post myocardial infarction complication and poor hospital outcomes. Implementation of pre-hajj screening, awareness and education programs, and primary and secondary preventive measures should be taken in to consideration to improve AMI pilgrim's outcome.